My advice is not to look at the whole but to look at pieces that you can do, make public commitments to doing them and the just do it, don't care at first if it is good or even right, just do it. Then review it (if possible review it publicly with someone you respect and trust) and then adapt it and continue.

You have to commit to starting it and being clear about what else you have on at the time and where this sits it the priority. Classic Scrum, but it works for me (mostly...)